Formed solid fumigant with an ignition head

ABSTRACT

A formed solid fumigant of the type used as an incense or insecticide is ignitable only at a relatively high temperature. It is covered at its tip portion with a layer which facilitates ignition of the solid fumigant. An ignition head, ignitable by a relatively low temperature, is provided at the tip of the covering layer.

United v States Patent 1191 I Sadahiro" Aug. 28, 1973 1 FORMED SOLID FUMIGANT WITH AN 2,720,012 10/1955 Lilly et a1 21/111' 2,770,854 11/1956 Miszeika .1 21/116 IGNITION HEAD 2,700,011 1/1955 Taylor 424/40 Junichi Sadahiro, Hyogo, Japan Daito Match Kogyo Kabushiki Kaisha, l-lyogo-ken, Japan Filed: Aug. 9, 1971 Appl. No.: 169,939

Inventor:

Assignee:

Topjian .1., 21/1 11 Primary Examiner-Joseph Scovronek Attorney-Eliot S. Gerber 57 ABSTRACT 1 Claim, 3 Drawing Figures 'Pmiminmsze Ian 3.754.861

INVENTOR. 'wv I c All SAD/H0196 FORMED SOLID FUMIGANT WITH AN IGNITION HEAD This invention relates to a formed solid fumigant, of the type used for incense, insecticide and the like, and more particularly to a formed solid fumigant having an ignition head formed on its tip portion.

It is known to use a solid fumigant as an insecticide for killing vermins, such as mosquitoes and other insects. The effective ingredients of such fumigants include pyrethrin, which is extracted from pyrethrum. cinerariaefolium, allethrin and the like. 1 A solid fumigant used for incense is also known. Such a solid perfume may be formed from a mixture of fragrant wood powder, a little potassium nitrate, a desired amount of perfume, and rubber latex. It is also known to provide an ignition head at such solid fumigants tip portion so as to omit using a match or lighter to ignite it. But such conventional fumigant is often broken from its tip portion when it is held between fingers and the ignition head is struck, to ignite it, against the striking surface of a match box.

Frequently, the fumigants main body is not succeedingly set on fire after the ignition of the head because the main body is hard, to prevent it from breaking easily.

An objective of the present invention is to provide a fumigant which will be positively set on fire after the combusition of an ignition head.

Another object is to provide a fumigant which is not breakable even if it is made relatively soft.

According to the present invention, a fumigant body is covered at its tip portion with a layer on which an ignition head is provided. The layer serves to elevate the temperature of the ignition fire and, thereby, ignite the layer 2 covering the tip portion of the fumigant body 3,

and an ignition head 1 formed on the layer 2.

As shown in. FIGS. 1 to 3, the form of the fumigant body 3 can be variously formed according to the desired length of burning time. When it is desired to burn for about less than 10 minutes, astick-form fumigant, as shown in FIG. 1, may be adopted. In the coneform fumigant in FIG. 2, the bottom has a dimension of 4 cm and the height is 2.5 cm., and the burning time is from 10 to 15 minutes. When a fumigant is formed, as

a coil in FIG. 3, it can be continuously burned and fumigated for 6 to 8 hours.

When used as an insecticide, for example, for killing mosquitoes, the fumigant body 3 is made by mixing fine powders of Japanese cedar, peppermint, and past with the main ingredient pyrethrum, adding potassium chlorate and potassium nitrate as an oxidizer, glass powder and lead oxide as regulating agent thereto, and forming the mixture to the desired shape by adhesives such as glue, starch, and synthetic resin.

The layer 2 covers the tip portion of the fumigant body 3 and serves to elevate the temperature of fire of the ignition head I sufficiently to ignite the fumigant body. The ingredients of this layer are incense, oxidizer such as potassum nitrate, potassium chlorate and potassium perchlorate, and regulating agents such as glass powder. These ingredients are mixed together and cemented to the tip portion of the fumigant body 3.

The ignition head 1, such as is used for the tip of a match, is provided at the tip of the layer 2. Ingredients of the ignition head 1 are potassium chlorate as an oxi-' dizer, manganese dioxide as an oxidizing promotor, potassium bichromate as an oxidizer and moisture-proof agent, sulfur as combustible materal, and inert material such as glass'powder, lead oxide, silicic sand, diatomaceou's earth, mica and kaolin. These ingredients are mixed together and cemented to the tip portion of the layer .by binders such as glue, starches and synthetic resins.

The formed solid fumigant, with the ignition head according to the present invention, operates in the same manner as a conventional safety match, in that it isset on fire by friction against the striking surface of the match box. As the heat of fire at the layer 2 is conducted to the fumigant body 3 from a relatively wide tip portion thereof and the heat is sufficient to ignite the fumigant body 3, the fumigant body 3 is positively and easily set on fire to smolder. I

The layer 2 itself is hard enough to endure the blow when the ignition'head l is struck against a striking (friction) surface.

Furthermore, in the embodiments shown in FIG. 2, the layer 2 strongly supports the tapered tip portion of the fumigant body 3 and prevents its tip from breaking.

I claim:

1. A formed solid fumigant comprising a fumigant body having a tip, said body being ignitable by a relatively high temperature; a layer covering the said tip of said fumigant body for facilitating an ignition thereof, said layer being a-compositionincluding an incense, an oxidizer, a regulating agent, and a binder; and a friction ignition head coveringa portion of said layer, said ignition head being ignitable by the relatively low temperature of friction, said friction ignition head including an oxidizer and moisture-proofing agent, an oxidizing promoter, inert material, a binder, and combustible material.

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